Cloud computing is an on-demand provision of computing capacity, particularly computer network resources, usually with no direct user involvement, and therefore, less costly than traditional computing. Large cloud networks usually have multiple functions deployed over multiple geographic locations, each location being an independent data center. The resources such as internet bandwidth and storage are exclusively provided by a cloud provider. There are many uses for cloud computing. Here we briefly look at the basic idea of cloud computing.
With cloud computing, there is no need to physically allocate resources in the form of physical hardware, software, or space because the resources are provided by a network of virtual machines. This setup allows users to rapidly scale a business without changing their infrastructure. For example, an application that was deploying data intensive applications previously might be scaled up to thousands of physical servers, but this is not necessary in cloud computing. It is also much less expensive to deploy cloud services versus a traditional server installation. Cloud providers typically make the provision of infrastructure as easy as creating a virtual machine.
An individual or a company with a lot of technological experience can create their own cloud compute virtual machines (VMs) in a matter of minutes. They will be provided with a development environment including libraries, vps middleware, and configuration services. A development environment in a cloud computing virtual machine allows developers to quickly and easily write code. They will be able to work in a fully responsive environment without worrying about system requirements. If a user wants to take their development to the next level, they just have to upgrade their virtual machines into the cloud, and this is where the costs come in.
An individual or organization with a large need for data storage can use one of several approaches to create a virtual machine, like AWS Services, Microsoft Office, IBM Bluemix, Google Compute, or Apple’s OS X. The first two options are more appropriate for organizations that do not need to implement their own infrastructure, and therefore they will not incur as many costs. AWS Services and Microsoft Office are appropriate for enterprises that need to run applications on their own hardware, but they will incur a lot of costs for the development and maintenance of these applications.
An organization that needs to deploy its own infrastructure can opt for an SaaS model, or a Platform-as-a-Service (PaaS). Platform-as-a-Service allows users to easily create applications, which makes it easier to scale a business when needed. The benefit of this option is that it will not require an IT professional to manage it. On the other hand, SaaS will require an IT professional to manage the physical servers, and it will also require an IT professional to manage the application’s virtualization. If the organization’s IT department is large, it will be more cost-effective to implement an SaaS model than a PaaS model.
Enterprises that do not use their own infrastructure will use third-party cloud instances. There are three types: public cloud instances, private cloud instances, and hybrid cloud instances. The public cloud instances are made available to anyone over the Internet. Private cloud instances are only accessible by a selected group of employees and administrators, and they are more suitable for businesses that are larger and have several data-acenters.